<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <!-- 媒体查询 -->
    <link rel="stylesheet" media="(max-width:800px)" href="style.css">
    <link rel="stylesheet" media="(min-width:801px)" href="example.css">

    <title>Document</title>
</head>
<body>
        <div class="box">
            🍎🈶
        </div>
</body>
</html>